Transistors - FETs, MOSFETs - RF

Image Part Number Description / PDF Quantity Rfq
BLA8H0910LS-500U

BLA8H0910LS-500U

Ampleon

RF MOSFET LDMOS 50V SOT502B

10

BLS9G3135L-400U

BLS9G3135L-400U

Ampleon

RF MOSFET LDMOS 32V SOT502A

49

BLP05H6150XRGY

BLP05H6150XRGY

Ampleon

RF FET LDMOS 135V 27DB SOT12242

50

BLF7G20LS-200,112

BLF7G20LS-200,112

Ampleon

RF FET LDMOS 65V 18DB SOT502B

0

BLF8G27LS-150GVJ

BLF8G27LS-150GVJ

Ampleon

RF FET LDMOS 65V 18DB SOT1244C

100

BLP05H6250XRY

BLP05H6250XRY

Ampleon

RF FET LDMOS 135V 27DB SOT12232

38

BLF8G20LS-160VU

BLF8G20LS-160VU

Ampleon

RF FET LDMOS 65V 20DB SOT1239B

0

BLC8G27LS-140AVZ

BLC8G27LS-140AVZ

Ampleon

RF FET LDMOS 65V 14.5DB SOT12751

23

BLC8G20LS-310AVY

BLC8G20LS-310AVY

Ampleon

RF FET LDMOS 65V 17DB SOT12583

100

BLP05H6110XRGY

BLP05H6110XRGY

Ampleon

RF FET LDMOS 135V 27DB SOT12242

98

BLM9D2325-20ABZ

BLM9D2325-20ABZ

Ampleon

RF MOSFET LDMOS SOT1462-1

190

BLS9G3135LS-115U

BLS9G3135LS-115U

Ampleon

BLS9G3135LS-115/SOT1135/TRAY

17

BLC9H10XS-350AZ

BLC9H10XS-350AZ

Ampleon

BLC9H10XS-350A/SOT1273/TRAYDP

81

BLS7G2730L-200PU

BLS7G2730L-200PU

Ampleon

RF FET LDMOS 65V 12DB SOT539A

0

BLC10G22XS-400AVTY

BLC10G22XS-400AVTY

Ampleon

BLC10G22XS-400AVT/SOT1258/REEL

0

BLA8G1011LS-300GU

BLA8G1011LS-300GU

Ampleon

RF FET LDMOS 65V 16DB SOT502E

0

BLF8G24LS-150GVJ

BLF8G24LS-150GVJ

Ampleon

RF FET LDMOS 65V 19DB SOT1244C

100

BLC9G20LS-240PVZ

BLC9G20LS-240PVZ

Ampleon

RF FET LDMOS 65V 18DB SOT12753

0

BLF8G09LS-270GWQ

BLF8G09LS-270GWQ

Ampleon

RF FET LDMOS 65V 20DB SOT1244C

0

BLF573S,112

BLF573S,112

Ampleon

RF FET LDMOS 110V 27.2DB SOT502B

79

Transistors - FETs, MOSFETs - RF

1. Overview

RF FETs and MOSFETs are critical semiconductor devices designed for high-frequency signal amplification and switching in radio frequency (RF) applications. These transistors operate efficiently in microwave and RF circuits, enabling wireless communication, radar systems, and broadcasting equipment. Their ability to handle high frequencies (typically above 1 MHz) with minimal noise and distortion makes them indispensable in modern telecommunications infrastructure.

2. Main Types and Functional Classification

TypeFunctional FeaturesApplication Examples
Junction FET (JFET)Voltage-controlled device with low noise and high input impedanceLow-noise amplifiers in RF receivers
MESFETMetal-Semiconductor FET with GaAs substrate for high-speed operationSatellite communication systems
HEMT/PHEMTHigh-electron-mobility transistor with pseudomorphic structures5G base stations, microwave amplifiers
LDMOSLateral Diffused MOSFET with high power density and thermal stabilityCellular base station amplifiers
GaN HEMTGallium Nitride-based HEMT for ultra-high frequency/powerRadar systems, 5G mmWave

3. Structure and Composition

RF FETs typically feature a three-terminal structure (source, gate, drain) with a semiconductor channel (Si, GaAs, or GaN). The gate region uses Schottky contacts (MESFET) or insulated layers (MOSFET). Advanced devices like HEMTs employ heterojunctions between different semiconductor materials (e.g., AlGaN/GaN) to enhance electron mobility. Packaging includes ceramic or plastic enclosures with RF-compatible connectors to minimize parasitic capacitance and inductance.

4. Key Technical Specifications

ParameterDescriptionImportance
Frequency RangeOperational bandwidth (e.g., 0.1-6 GHz)Determines application suitability
Power Output (P1dB)1dB compression point (e.g., 10-500W)Measures linearity and saturation
Gain (S21)Signal amplification ratio (e.g., 10-30 dB)System sensitivity indicator
Efficiency (PAE)Power-added efficiency (e.g., 40-75%)Energy consumption metric
Input/Output VSWRVoltage Standing Wave Ratio (e.g., <2:1)Mismatch loss assessment

5. Application Fields

  • Telecommunications: 5G/4G base stations, small cells, fiber-optic networks
  • Defense: Radar systems, electronic warfare, UAV communication
  • Broadcasting: FM/TV transmitters, satellite uplinks
  • Medical: MRI machines, RF ablation equipment
  • Industrial: Plasma generators, RFID readers

6. Leading Manufacturers and Products

ManufacturerRepresentative ProductKey Specifications
NXP SemiconductorsMRF1K50GN50W GaN HEMT, 1.8-2.7GHz, 70% PAE
Wolfspeed (Cree)CGH4G090400F400W GaN HEMT, 900MHz, 10:1 VSWR ruggedness
InfineonBLS14H10LS-250250W LDMOS, 1.8-2.2GHz, 14dB gain
MACOMNPT1007SiGe HBT, 7GHz, 18dB gain for 5G

7. Selection Recommendations

  1. Match operating frequency to device transition frequency (fT)
  2. Verify power handling with derating curves under working temperatures
  3. Assess package thermal resistance (Rth) for longevity
  4. Compare S-parameters for impedance matching requirements
  5. Consider ESD protection and ruggedness for field conditions

8. Industry Trends

Key trends include: - Wide bandgap materials (GaN/SiC) enabling higher efficiency (>80%) at mmWave frequencies - 3D packaging for reduced parasitics in 5G massive MIMO systems - Integrated RF frontend modules (FEM) with on-chip matching networks - AI-driven design optimization for complex impedance matching - Growing adoption of GaN-on-diamond substrates for thermal management

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